Patents by Inventor Keito IKEBATA

Keito IKEBATA has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Diverting agent, method for temporarily filling fracture in well using same, and method for further forming fracture
    Patent number: 11939855
    Abstract: A diverting agent and method for temporarily filling fractures. The diverting agent contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less.
    Type: Grant
    Filed: April 20, 2023
    Date of Patent: March 26, 2024
    Assignee: MITSUBISHI CHEMICAL CORPORATION
    Inventors: Shusaku Mandai, Yasuhiro Hirano, Yuya Kanamori, Kenji Furui, Keito Ikebata, Tomoki Onishi
  • DIVERTING AGENT, METHOD FOR TEMPORARILY FILLING FRACTURE IN WELL USING SAME, AND METHOD FOR FURTHER FORMING FRACTURE
    Publication number: 20230258066
    Abstract: An object of the present invention is to provide a diverting agent having an excellent filling property against various fractures. The diverting agent of the present invention contains a powder-like polyvinyl alcohol-based resin (P1) and a pellet-like polyvinyl alcohol-based resin (P2), and has an adsorption coefficient kc of 0.01 or more and 1 or less, which is obtained by a method including steps (i) to (iii). (The steps (i) to (iii) are the same as those described in the description.
    Type: Application
    Filed: April 20, 2023
    Publication date: August 17, 2023
    Applicant: Mitsubishi Chemical Corporation
    Inventors: Shusaku MANDAI, Yasuhiro HIRANO, Yuya KANAMORI, Kenji FURUI, Keito IKEBATA, Tomoki ONISHI